https://bugs.kde.org/show_bug.cgi?id=400499
--- Comment #16 from Matt Fagnani <matthew.fagn...@utoronto.ca> --- Created attachment 116888 --> https://bugs.kde.org/attachment.cgi?id=116888&action=edit New crash information added by DrKonqi ksysguard (5.14.4) using Qt 5.11.1 - What I was doing when the application crashed: I was troubleshooting the ksysguard crashes in this report using gammaray with the following commands in konsole where the process id of ksysguard was 2506 ksysguard & gammaray --injector gdb --pid 2506 Other messages shown in the shell during and after the crash were: QObject::disconnect: No such signal QObject::contentsChanged() QObject::disconnect: (receiver name: 'com.kdab.GammaRay.TextDocumentModel') KCrash: Application 'ksysguard' crashing... KCrash: Attempting to start /usr/libexec/drkonqi from kdeinit sock_file=/run/user/1000/kdeinit5__0 QSocketNotifier: Invalid socket 8 and type 'Read', disabling... QSocketNotifier: Invalid socket 23 and type 'Read', disabling... QSocketNotifier: Invalid socket 9 and type 'Read', disabling... Using gdb on previous segmentation faults involving operator==(QString const&, QString const&) (s1=..., s2=...) at tools/qstring.cpp:3153, I observed that s1.d pointed to addresses which were not accessible by the process which had unusually low but not null addresses or unusally high addresses. The invalid pointers are possibly due to memory corruption stemming from the use-after-free errors I reported previously detected using valgrind and AddressSanitizer. -- Backtrace (Reduced): #8 0xb5c46bb2 in operator==(QString const&, QString const&) (s1=..., s2=...) at tools/qstring.cpp:3153 #9 0xb6837f8f in QLabel::setText(QString const&) (this=0x2528900, text=...) at widgets/qlabel.cpp:287 #10 0xb7e7849c in TopLevel::answerReceived(int, QList<QByteArray> const&) (this=0x2493b40, id=1, answerList=...) at /usr/src/debug/ksysguard-5.14.4-1.fc29.i386/gui/ksysguard.cpp:450 #11 0xb74ee925 in KSGRD::SensorAgent::processAnswer(char const*, int) (this=0x2516500, buf=0x29dee40 "0.000000\nksysguardd> 61004\nksysguardd> 1216116\nksysguardd> 312560\nksysguardd> 2590460\nksysguardd> 35072\nksysguardd> 312560\nksysguardd> 35072\nksysguardd> /dev/mapper/fedora-root\t30832636\t26792620\t24507"..., buflen=442) at /usr/src/debug/libksysguard-5.14.4-1.fc29.i386/ksgrd/SensorAgent.cpp:91 #12 0xb74f5e8e in KSGRD::SensorShellAgent::msgRcvd() (this=0x2516500) at /usr/include/qt5/QtCore/qarraydata.h:206 -- You are receiving this mail because: You are watching all bug changes.
